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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 17 — Sep. 1, 2013
  • pp: 3283–3286

In-line microfluidic refractometer based on C-shaped fiber assisted photonic crystal fiber Sagnac interferometer

Chuang Wu, Ming-Leung Vincent Tse, Zhengyong Liu, Bai-Ou Guan, Chao Lu, and Hwa-Yaw Tam  »View Author Affiliations

Optics Letters, Vol. 38, Issue 17, pp. 3283-3286 (2013)

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We propose and demonstrate a highly sensitive in-line photonic crystal fiber (PCF) microfluidic refractometer. Ultrathin C-shaped fibers are spliced in-between the PCF and standard single-mode fibers. The C-shaped fibers provide openings for liquid to flow in and out of the PCF. Based on a Sagnac interferometer, the refractive index (RI) response of the device is investigated theoretically and experimentally. A high sensitivity of 6621nm/RIU for liquid RI from 1.330 to 1.333 is achieved in the experiment, which agrees well with the theoretical analysis.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.5790) Instrumentation, measurement, and metrology : Sagnac effect
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 10, 2013
Revised Manuscript: July 21, 2013
Manuscript Accepted: July 24, 2013
Published: August 22, 2013

Chuang Wu, Ming-Leung Vincent Tse, Zhengyong Liu, Bai-Ou Guan, Chao Lu, and Hwa-Yaw Tam, "In-line microfluidic refractometer based on C-shaped fiber assisted photonic crystal fiber Sagnac interferometer," Opt. Lett. 38, 3283-3286 (2013)

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